Tele-Communication (Telecom) Terms Glossary and Dictionary
Dial-Normal Transmission Signal
Dial-Normal Transmission Signal is a second dial tone returned to an operator between digits indicating that he/she may dial the remainder of the number. For example, when an operator reaches a link-type Community Dial Office via a step-by-step office after dialing a routing code, he/she must pause until an idle link at the Community Dial Office returns dial tone. This method of operation is not recommended or considered standard. Dial-Normal Transmission Signal is a steady Low Tone.